Contrast:

1. "You shall not cross the barrier."
2. "Do not cross the barrier."

When uttering (a), U would characteristically intend A to think that U intends that A shall not cross the barrier; but it seems that a specification of U's meaning, for a normal utterance of (b), would be incompletely explicated unless it is stated that U intends A not merely to think that U intends that A shall not cross the barrier, but also himself to form the intention not to cross.

Let us then draw a distinction between what I might call "purely exhibitive" utterances (utterances by which the utterer U intends to impart a belief that he [U] has a certain propositional attitude), and utterances which are not only exhibitive but also what I might call

"protreptic" (that is, utterances by which U intends, via imparting the belief that he [U] has a certain propositional attitude, to induce a corresponding attitude in the hearer).